3642642687 has 12 divisors (see below), whose sum is σ = 5077208024. Its totient is φ = 2322843600.

The previous prime is 3642642673. The next prime is 3642642709. The reversal of 3642642687 is 7862462463.

It is not a de Polignac number, because 3642642687 - 2⁸ = 3642642431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642642607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1146064 + ... + 1149237.

Almost surely, 2^3642642687 is an apocalyptic number.

3642642687 is a deficient number, since it is larger than the sum of its proper divisors (1434565337).

3642642687 is a wasteful number, since it uses less digits than its factorization.

3642642687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295350 (or 2295327 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 48.

The square root of 3642642687 is about 60354.3095975755. The cubic root of 3642642687 is about 1538.6465151520.

The spelling of 3642642687 in words is "three billion, six hundred forty-two million, six hundred forty-two thousand, six hundred eighty-seven".